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arXiv quant-ph/0202059quant-ph
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在低功耗计算机中,时钟信号的可回收性是否存在量子界限?

Are there quantum bounds on the recyclability of clock signals in low power computers?

Dominik Janzing, Thomas Beth

摘要:

即使一个逻辑网络由逻辑可逆门操作组成,如果门实现由外部时钟信号控制,计算过程可能具有高耗散率。这是一个悬而未决的问题,全球时钟机制是否一定涉及不可逆的过程。然而,可以表明,它是不可能的,以提取任何定时信息从微物理时钟而不干扰it.applying最近的结果量子信息理论,我们可以显示一个硬件无关的下限的定时信息,是必然被破坏,如果一个试图复制的信号。对于低能量信号,边界变得更紧,即,定时信息变得越来越量子化。

英文摘要:

Even if a logical network consists of thermodynamically reversible gate operations, the computation process may have high dissipation rate if the gate implementation is controlled by external clock signals. It is an open question whether the global clocking mechanism necessarily envolves irreversible processes. However, one can show that it is not possible to extract any timing information from a micro-physical clock without disturbing it. Applying recent results of quantum information theory we can show a hardware-independent lower bound on the timing information that is necessarily destroyed if one tries to copy the signal. The bound becomes tighter for low energy signals, i.e., the timing information gets more and more quantum.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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